1 . 如图,
,
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99020b843d024aa6bd65c053fe9fc37.png)
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3卷引用:2024年云南省玉溪市九年级初中学业水平考试模拟检测数学试题
2 . 如图,在等边三角形
中,点
,
分别是边
,
上的点,且
,连接
,
交于点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/b3cfe005-6ae3-4484-9fa7-2ab5ddece692.png?resizew=145)
(1)求证:
;
(2)若
,求
的值;
(3)若点P恰好落在以
为直径的圆上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421291381be28da4bd16560fd383b4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/b3cfe005-6ae3-4484-9fa7-2ab5ddece692.png?resizew=145)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e238f17e8e5277a4194d78d33af1f0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d511b45c0c8b8544255dbf78bb716c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17447cf765487d7712544bc0072f8fd2.png)
(3)若点P恰好落在以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee940049ce6026ed32c01a8d0b29905.png)
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7卷引用:2022年浙江省杭州市滨江区一模数学试题
2022年浙江省杭州市滨江区一模数学试题2022年浙江省杭州市初中毕业升学模拟检测(一)数学试卷(已下线)专题4.10 平行线分线段成比例(培优篇)(专项练习)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题27.11 由平行线截得的比例线段(培优篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)(已下线)专题6.10 由平行判断成比例的线段(培优篇)(专项练习)-2022-2023学年九年级数学下册基础知识专项讲练(苏科版)浙江省金华市五中等三校联盟2023-2024学年九年级上学期期中数学试题(已下线)清单14 相似图形基础(3个考点梳理+14种题型解读+提升训练)-2023-2024学年九年级数学上学期期末考点大串讲(苏科版)
解题方法
3 . 等腰直角
与等腰直角
的直角顶点
重合.
与
相交于
,
的延长线交
于
,连接
.
(1)如图1,求证:
;
(2)如图2,
,
,
在同一条直线上,取
的中点
,分别连接
,
,求证:
;
(3)如图3,过
作
的平行线,过
作
的平行线,两线相交于
,且点
在
的延长线上,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bc4672599da329642dd46717ae587e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/31304585-9be5-47c7-8e90-d6e0d8c0cbe7.png?resizew=208)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7bfae5bd300c678dad3a8eb00adc65.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca7859562bb375c604b9aae46a9bcc5.png)
(3)如图3,过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbbe0e92c25f2e8c5c552157a350acf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13340275ca97809c5789d4f70a9f185c.png)
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5卷引用:2022年安徽省合肥省十校中考联考数学试题(三)
2022年安徽省合肥省十校中考联考数学试题(三)(已下线)专题4.10 图形的相似章末十大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(北师大版)(已下线)专题23.10 图形的相似章末十大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(华东师大版)(已下线)专题4.10 相似三角形章末十大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(浙教版)(已下线)专题22.10 相似形章末十大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(沪科版)
4 . 如图,在矩形
中,
是边
上一点,过点
作对角线
的平行线,交
于
,交
和
的延长线于点
.
;
(2)若
,判断四边形
是什么特殊四边形?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f3ed5ea1cf0fa8f7c6be46cd5fa057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ff636044824c086ab3eb75b04d19ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bb9c0d405c1ddbd67ade46ebbeec2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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8卷引用: 2023年山东省青岛市市南区一模数学试题
5 . 如图,已知
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec73073e9614ba924fcbaba4caa2f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f6405550e89f89308de904441d5e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2359b5da425fb96963a645e73ff4ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf8b8bed958cdabdbbe8d7ad6e0715e.png)
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4卷引用:2023年广东省广州市天河外国语学校中考模拟数学试题
2023年广东省广州市天河外国语学校中考模拟数学试题江苏省徐州市铜山区铜山区郭集中学2023-2024学年八年级上学期10月月考数学试题(已下线)12.1 全等三角形(题型精讲精练)-【题型分类精粹】2023-2024学年八年级数学上学期期中期末复习讲练系列1【考点闯关】(人教版)(已下线)第四章第03讲 探究三角形全等的条件(6类热点题型讲练)-【帮课堂】2023-2024学年七年级数学下册同步学与练(北师大版)
6 . 已知,如图,点
、
、
、
在同一直线上,
、
相交于点
,
,垂足为
,
,垂足为
,且
,
.
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf4dc4d7d30af1cdce660795e0fd7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5322a78b02c2bc387ea7dce3e9461974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c55ee522f41c43253050e92b3c8de31.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
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名校
7 . 已知:如图,
,
.求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99020b843d024aa6bd65c053fe9fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b72cfa02d58370c67651735ebcb9e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e53497af8899cb299d762f1a4f46a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99020b843d024aa6bd65c053fe9fc37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/5/92277e26-f694-4bb7-8cad-bc60a67de1d8.png?resizew=158)
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名校
8 . 已知:如图,点B,E,C,F在同一直线上,
,且
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81adb13f5a7550b0f94f770900a613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a510a3eb906b3ef0760b0d1723d11ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805768a5ffaf8bdfa4bc3b680aafdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac61f3477e623aa4f924a82bd7a06ce4.png)
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8卷引用:2024年云南省昆明市西山区初中学业水平第一次模拟考试数学试题
9 . 如图,在四边形
中,
,在
上取两点E,F,使
,连接
,
.
(1)若
,试说明
;
(2)在(1)的条件下,请连接
,
,试判断
与
有怎样的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03687d97d61b4a7cecbb73f2a6604212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/24/8266fd75-faea-448b-a5b5-f881b6947cc1.png?resizew=173)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed619e2dc900c52a29012e5b821451bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26dba530ba1c15d3d3d5f90e0bf2810.png)
(2)在(1)的条件下,请连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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4卷引用:2023年山西省朔州市朔城区中考一模数学试题
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名校
10 . 如图,
,
于A,
于B,且
,点P从B向A运动,每秒钟走
,Q点从B向D运动,每秒钟走
,点P,Q同时出发,运动______ 秒后,
与
全等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdc2ff4413983ac270461df272647cc.png)
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